Thyroid disorder is a disease of the Thyroid gland. It can result in Hypothyroidism, which is scant production of secretion from the gland or Hyperthyroidism, which is abundance of secretions. This results in symptoms such as coldness, sluggishness, dry skin, scanty hair growth and Hyperthyroidism results in weight loss, excessive sweating, trembling hands, pounding of the heart and, bulging eyes. I don't think your clumsiness is because of your thyroid disorder. I think its just Psychological and its just in your head. If you stop thinking that you are clumsy you will stop being clumsy. For thyroid disorder you must get a treatment from a doctor. Here is the link for further details on the disease.
Thyroid disorder
Thyroid disorder
